- 行业: Library & information science
- Number of terms: 152252
- Number of blossaries: 0
- Company Profile:
The National Library of Medicine (NLM), on the campus of the National Institutes of Health in Bethesda, Maryland, is the world's largest medical library. The Library collects materials and provides information and research services in all areas of biomedicine and health care.
Continued exposure or exposures occurring over an extended period of time, or a significant fraction of the test species' or of the group of individuals', or of the population's life-time.
Industry:Biology; Chemistry
Variant of the case control study in which the controls are drawn from the same cohort as the cases but are identified before the cases develop; some of the controls may later become cases.
Industry:Biology; Chemistry
Conceptualized part of the body (organs, tissues, cells, or fluids) considered as an independent system for purposes of modeling and assessment of distribution and clearance of a substance.
Industry:Biology; Chemistry
Quality rating, based on standard evaluation criteria established by the US Office of Pesticide Programs regulatory agencies, given to toxicological studies after submission by registrants.
Industry:Biology; Chemistry
Chronic respiratory disease characterized by bronchoconstriction, excessive mucus secretion and edema of the pulmonary alveoli, resulting in difficulty in breathing out, wheezing, and cough.
Industry:Biology; Chemistry
Assessment of risk which assumes the worst possible case scenario and therefore gives the highest possible value for risk: risk management decisions based on this value will maximize safety.
Industry:Biology; Chemistry
Calculated diameter in a population of particles in a gas or liquid phase above which there are as many particles with larger diameters as there are particles below it with smaller diameters.
Industry:Biology; Chemistry
Self-replicating structure consisting of DNA complexed with various proteins and involved in the storage and transmission of genetic information; the physical structure that contains the genes.
Industry:Biology; Chemistry
Study in which organisms are observed during the greater part of the life span and in which exposure to the test agent takes place over the whole observation time or a substantial part thereof.
Industry:Biology; Chemistry
Study in which organisms are observed during the greater part of the life span and in which exposure to the test agent takes place over the whole observation time or a substantial part thereof.
Industry:Biology; Chemistry
